Physically auxiliary anti-catalyst aggregated photo-catalytic reactor having high treatment capacity and used for degrading wastewater

Abstract

The invention relates to a physically auxiliary anti-catalyst aggregated photo-catalytic reactor having high treatment capacity and used for degrading wastewater, belonging to the technical field of wastewater treatment. The problems of loss of nanometer photocatalyst, waste of microwave energy, low single-tank wastewater treatment capacity of the reactor, insufficient systemic circulation intensity of internal liquid, difficulty in distinguishing a finishing point time of degradation reaction, incapability of dissipating catalyst aggregation in situ with strong force and the like exist in the current related background technology and these problems can be solved by adoption of the scheme provided by the invention. According to the invention, microwave is restrained by using a metal cage, therefore, sharp capacity expansion of the reactor is realized; the systemic circulation of internal liquid is intensified through the structure in the scheme; external cascaded three-grade back flushing type filters are beneficial to finely intercepting catalyst particles; the catalyst aggregation can be dissipated in situ with strong force through the structure; simultaneously, an ultrasonic cleaning quartz tube is incidentally arranged; related power supplies can be turned off automatically and instantly when degradation reaction is ended; energy input is stopped; simultaneously, the generation process of extra ozone is ended, therefore, secondary pollution can be avoided.

Description

technical field [0001] The invention relates to a large-capacity photocatalytic reactor for physically assisted anti-catalyst agglomeration wastewater degradation, and belongs to the technical field of CO2F wastewater treatment. Background technique [0002] Microwave photocatalytic degradation treatment technology, as an effective harmless treatment technology for industrial wastewater containing organic pollutants, has attracted much attention in recent years. [0003] Regarding the microwave photocatalytic degradation technology, as an example, refer to the Chinese patent application with publication number CN102260003A. [0004] The Chinese patent application with the publication number CN102260003A uses microwaves as the excitation source to excite the electrodeless ultraviolet lamp to emit ultraviolet rays, and irradiates the suspension mixed with photocatalyst titanium dioxide inside the liquid. The electrodeless ultraviolet lamp is shrouded and protected by a quartz ...

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Problems solved by technology

[0036] In the device structure expressed in the Chinese patent application with the publication number CN102260003A, the outer wall of the quartz tube used to screen the electrodeless ultraviolet lamp refers to the outer wall of the quartz tube, which is treated with the treated industrial wastewater for a long time. Contact, it is inevitable to gradually accumulate fouling. Of course, the fouling substances are mainly inorganic impurities that are not easily touched by the photocatalytic reaction. The fouling phenomenon formed by this mechanism is easy to be observed after the equipment has been running for a long time; Although the fouling layer on the outer wall of the quartz tube is only a thin layer, it is enough to significantly block the ultraviolet radiation of the electrodeless ultraviolet lamp, which will cause the actual treatment efficiency of the microwave photocatalytic reaction treatment device to be greatly reduced; The rising air bubbles in the reactor are too scattered and the flushing force is weak. It is really difficult to maintain the surface of the quartz tube by relying on the relatively dispersed air bubbles. In other words, the more dispersed air bubbles are more The weak scouring force is not enough to completely stop the fouling process on the surface of the quartz tube; during the use of the laboratory scale, the above-mentioned fouling problem is not easy to detect, but, on the industrial application scale, the fouling problem will undoubtedly be eliminated. Therefore, how to immediately and effectively remove the fouling layer on the outer wall of the quartz tube without dismantling the machine, and maintain the continuous high efficiency of the microwave photocatalytic treatment device, this problem cannot be ignored. Question 10

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